Integrated crane electric control circuit

Abstract

The utility model relates to the technical field of crane control, in particular to an integrated crane electric control circuit. The system comprises a main loop, a control loop, a lifting machine loop, a cart loop and a trolley loop, the main loop is electrically connected with the lifting machine loop, the cart loop and the trolley loop, and the main loop is used for supplying power to the lifting machine loop, the cart loop and the trolley loop; the main loop comprises a main control circuit module, a rectification module and a soft start module; the control loop comprises a sensing module, a control module, a remote control module and a driving module; the control module is electrically connected with the sensing module, the remote control module and the driving module; according to the integrated crane electric control circuit, a lifting machine, a cart, a trolley and other mechanisms are all designed to be independent control loops, simultaneous operation of multiple mechanisms is achieved, and the operation efficiency of a crane is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of crane control, in particular to an integrated crane electric control circuit. Background Art

[0002] Cranes are common construction machinery used to lift heavy objects. Lifting large components often requires the coordination of multiple mechanisms, which must be synchronized and controlled to ensure lifting safety and other technical requirements.

[0003] Each existing mechanism uses an independent control system. A single mechanism requires a corresponding control end to drive it, and the cooperation of multiple mechanisms requires the simultaneous control of multiple different control ends. In actual work, the operation is relatively complicated and it is difficult to achieve synchronous control between different mechanisms. Utility Model Content

[0004] The purpose of the utility model is to propose an integrated crane electric control circuit, which designs the hoist, trolley and car mechanisms as independent control loops, realizes the simultaneous operation of multiple mechanisms, and greatly improves the operating efficiency of the crane.

[0005] To achieve this purpose, the utility model adopts the following technical solutions: an integrated crane electric control circuit, including a main circuit, a control circuit, a hoist circuit, a trolley circuit and a carriage circuit;

[0006] The main circuit is electrically connected to the hoist circuit, the trolley circuit and the trolley circuit, and the main circuit is used to supply power to the hoist circuit, the trolley circuit and the trolley circuit;

[0007] The main circuit includes a main control circuit module, a rectifier module and a soft start module;

[0008] The control circuit includes a sensor module, a control module, a remote control module and a drive module; the control module is electrically connected to the sensor module, the remote control module and the drive module;

[0009] The control module is in communication with the hoist circuit;

[0010] The driving module is communicatively connected to the trolley circuit and the trolley circuit.

[0011] Preferably, the control module is an X3245P5U4 module.

[0012] Preferably, the driver module is an X3245P5M1 module.

[0013] Preferably, the main control circuit module includes a power-on contactor and a main air switch, the power-on contactor is electrically connected to the main air switch, and the main air switch is electrically connected to the rectifier module.

[0014] Preferably, the hoist circuit includes a hoisting inverter circuit and a braking circuit, the braking circuit is electrically connected to the hoisting inverter circuit, and the hoisting inverter circuit is electrically connected to the hoisting motor.

[0015] Preferably, the trolley circuit includes a trolley inverter circuit, and the trolley inverter circuit is electrically connected to the trolley motor.

[0016] Preferably, the trolley circuit includes a trolley inverter circuit, and the trolley inverter circuit is electrically connected to the trolley motor.

[0017] Preferably, the sensing module includes a first sensor and a second sensor, and the first sensor and the second sensor are both electrically connected to the control module.

[0018] The technical solution provided by the utility model may have the following beneficial effects:

[0019] The utility model designs the hoist, trolley and car and other mechanisms as independent control loops. Each control loop has independent control and execution actions. Therefore, multiple mechanisms can work simultaneously without interfering with each other, realizing simultaneous operation of multiple mechanisms and greatly improving the operating efficiency of the crane.

[0020] Through the cooperation of the remote control module, control module and drive module, when multiple mechanisms are connected, different input signals can be identified and processed, and then logical judgments are made through the control module, and finally signals are sent through the drive module to drive the corresponding mechanism to realize the corresponding action. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a circuit connection diagram of an embodiment of the present invention;

[0022] Figure 2 This is the circuit connection intention of the main circuit of an embodiment of the utility model;

[0023] Figure 3 This is the circuit connection intention of the control loop of one embodiment of the utility model;

[0024] Figure 4 This is a schematic diagram of the principle of the main circuit and the control circuit of an embodiment of the utility model;

[0025] Figure 5 This is a schematic diagram of the principles of a control module and a remote control module according to an embodiment of the present invention;

[0026] Figure 6 It is a schematic diagram of the principles of a control module and a sensor module in one embodiment of the present utility model.

[0027] Among them, the main circuit 1, the main control circuit module 11, the rectifier module 12, the soft start module 13, the control circuit 2, the sensor module 21, the control module 22, the remote control module 23, the drive module 24, the hoist circuit 3, the trolley circuit 4, and the trolley circuit 5. DETAILED DESCRIPTION

[0028] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0029] In the description of the present invention, unless otherwise specified, “a plurality of” means two or more.

[0030] The following combination Figures 1 to 6 , describing an integrated crane electric control circuit according to an embodiment of the present utility model.

[0031] An integrated crane electric control circuit includes a main circuit 1, a control circuit 2, a hoist circuit 3, a trolley circuit 4, and a carriage circuit 5;

[0032] The main circuit 1 is electrically connected to the hoist circuit 3, the trolley circuit 4 and the trolley circuit 5, and the main circuit 1 is used to supply power to the hoist circuit 3, the trolley circuit 4 and the trolley circuit 5;

[0033] The main circuit 1 includes a main control circuit module 11, a rectifier module 12 and a soft start module 13;

[0034] The control circuit 2 includes a sensor module 21, a control module 22, a remote control module 23 and a drive module 24; the control module 22 is electrically connected to the sensor module 21, the remote control module 23 and the drive module 24; the remote control module 23 includes a remote control or a ground hand control box, etc. The remote control module 23 is responsible for sending operation instructions to the control module 22, and the control module 22 performs calculations on the operation instructions.

[0035] Preferably, the control module 22 is in communication with the hoist circuit 3;

[0036] Preferably, the driving module 24 is communicatively connected to the trolley circuit 4 and the trolley circuit 5 .

[0037] This new system integrates the hoist, trolley, and carriage into independent control circuits, each with independent control and execution. This allows multiple mechanisms to operate simultaneously without interfering with each other. This system significantly improves the crane's operating efficiency by enabling simultaneous operation of multiple mechanisms.

[0038] The utility model cooperates with the remote control module 23, the control module 22 and the drive module 24. When multiple mechanisms are connected, it can identify and process different input signals, then perform logical judgment through the control module 22, and finally send a signal through the drive module 24 to drive the corresponding mechanism to realize the corresponding action.

[0039] Since each mechanism is an independent module, different mechanisms can be switched at will without affecting the driving of each mechanism. Therefore, in the remote control module 23, the function buttons, switches and other control elements are integrated on an operation panel. Through the buttons or switches on the operation panel, the operation instructions of the corresponding mechanism are executed or the operation instructions of different mechanisms are switched, which is more convenient and quick when operating the remote control module 23.

[0040] Preferably, the control module 22 is an X3245P5U4 module, and the drive module 24 is an X3245P5M1 module.

[0041] The control module 22 and the driving module 24 are integrated on a circuit board, integrating all the operating instructions and processing data of the circuit.

[0042] Preferably, the main control circuit module 11 includes a power-on contactor and a main air switch, the power-on contactor is electrically connected to the main air switch, and the main air switch is electrically connected to the rectifier module 12 .

[0043] Preferably, the hoist circuit 3 includes a hoisting inverter circuit and a braking circuit, the braking circuit is electrically connected to the hoisting inverter circuit, and the hoisting inverter circuit is electrically connected to the hoisting motor.

[0044] The braking circuit dissipates regenerative braking current, stabilizes grid voltage, and improves braking capacity. When the output frequency drops too quickly, the hoist motor generates regenerative braking current, causing a rise in DC voltage and potentially damaging the circuit. The braking resistor in the braking circuit dissipates this regenerative braking current, thus preventing damage to the system.

[0045] The braking circuit converts the fed-back electrical energy into heat energy and consumes it, avoiding voltage fluctuations caused by the regenerative electrical energy being fed back into the power grid, and helping to maintain the smooth operation of the power supply network.

[0046] The braking circuit can significantly improve the braking capacity of the system, ensuring that the crane can stop quickly within the set time.

[0047] Preferably, the trolley circuit 4 includes a trolley inverter circuit, and the trolley inverter circuit is electrically connected to the trolley motor.

[0048] Preferably, the trolley circuit 5 includes a trolley inverter circuit, and the trolley inverter circuit is electrically connected to the trolley motor.

[0049] The hoist circuit 3, the trolley circuit 4 and the carriage circuit 5 convert the DC control signal issued by the control module 22 into an AC output signal through the inverter circuit, and use power electronic devices such as insulated gate bipolar transistors to convert the filtered DC voltage waveform into an AC voltage waveform with adjustable frequency. By controlling the switching timing of the insulated gate bipolar transistors, precise control of the output AC voltage waveform frequency and amplitude is achieved. By adjusting the frequency and amplitude of the output AC voltage, precise control of the corresponding motor speed and load can be achieved.

[0050] Preferably, the sensing module 21 includes a first sensor and a second sensor, and both the first sensor and the second sensor are electrically connected to the control module 22 .

[0051] The first sensor is used to collect signals including upper and lower lifting limits, lifting deceleration limit, trolley forward, trolley reverse, trolley left, and trolley right. The second sensor is used to collect weighing signals. Through the sensor equipment, all external signals can be collected, including digital signals (such as switch status) and analog signals (such as weight and temperature). These signals reflect the real-time status of the crane during operation and form the basis for data processing and control in the "control module".

[0052] The system receives input signals from various mechanisms through sensors, buttons, switches, and other components. These signals include position information, speed information, and operating instructions. The system preprocesses these signals, such as filtering, amplification, and conversion, to ensure signal accuracy and reliability.

[0053] Part of the command working process: When the lifting mechanism needs to do the lifting movement, operate the remote control module (23) remote control, press the rising button, the remote control sends a signal, the X1 of the X3245P5U4 module receives the rising command, and collects the lifting limit (X14, X15, X16), lifting motor overheating (X26), lifting brake feedback (X27), hammer limit (X32), anti-slanting limit (X33), weighing sensor (VP, AGND, AI5+, AI5-, AO1 ) and other signals, the control module (22) compares the data, and if the value obtained is 11110101 or 11010101, it confirms that the lifting mechanism is in normal state, sends an ascending signal to the lifting drive module, and the hoist inverter circuit (U1, V1, W1) drives the lifting motor to operate. When the X3245P5U4 module detects that the stall current of the lifting motor reaches the pre-threshold value, it sends a brake opening signal (BK3+, BK3-) to control the lifting brake to open, thereby realizing the lifting mechanism's ascending movement.

[0054] At the same time, when the trolley mechanism needs to move to the left, the remote control can be operated at the same time, and the forward button can be pressed. The remote control sends a signal, and X7 of the X3245P5U4 module receives the forward command and collects the trolley limit (X20, X21, X22) sensor signal. After the control module (22) compares the data, if the value obtained is 111 or 110, it is confirmed that the trolley mechanism is in a normal state, and a left signal is sent to the trolley drive module. The trolley inverter circuit (U3, V3, W3) drives the trolley motor to operate, thereby realizing the left movement of the trolley mechanism.

[0055] Throughout this specification, references to terms such as "embodiment" and "example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0056] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An integrated crane electric control circuit, characterized in that: It includes a main circuit (1), a control circuit (2), a hoist circuit (3), a trolley circuit (4) and a trolley circuit (5); The main circuit (1) is electrically connected to the hoist circuit (3), the trolley circuit (4) and the trolley circuit (5), and the main circuit (1) is used to supply power to the hoist circuit (3), the trolley circuit (4) and the trolley circuit (5); The main circuit (1) comprises a main control circuit module (11), a rectifier module (12) and a soft start module (13); The control circuit (2) comprises a sensing module (21), a control module (22), a remote control module (23) and a driving module (24); the control module (22) is electrically connected to the sensing module (21), the remote control module (23) and the driving module (24); The control module (22) is in communication connection with the hoist circuit (3); The drive module (24) is communicatively connected to the trolley circuit (4) and the trolley circuit (5).

2. The integrated crane electric control circuit according to claim 1, characterized in that: The control module (22) is an X3245P5U4 module.

3. The integrated crane electric control circuit according to claim 1, characterized in that: The driving module (24) is an X3245P5M1 module.

4. The integrated crane electric control circuit according to claim 1, characterized in that: The main control circuit module (11) comprises a power-on contactor and a main air switch, the power-on contactor is electrically connected to the main air switch, and the main air switch is electrically connected to the rectifier module (12).

5. The integrated crane electric control circuit according to claim 1, characterized in that: The hoist circuit (3) comprises a hoisting inverter circuit and a braking circuit, wherein the braking circuit is electrically connected to the hoisting inverter circuit, and the hoisting inverter circuit is electrically connected to the hoisting motor.

6. The integrated crane electric control circuit according to claim 1, characterized in that: The trolley circuit (4) includes a trolley inverter circuit, and the trolley inverter circuit is electrically connected to the trolley motor.

7. The integrated crane electric control circuit according to claim 1, characterized in that: The trolley circuit (5) includes a trolley inverter circuit, and the trolley inverter circuit is electrically connected to the trolley motor.

8. The integrated crane electric control circuit according to claim 1, characterized in that: The sensing module (21) comprises a first sensor and a second sensor, and both the first sensor and the second sensor are electrically connected to the control module (22).

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